A comparison of an adaptive full-order observer and a reduced-order observer for synchronous reluctance motor drives

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Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering | A4 Artikkeli konferenssijulkaisussa
Date
2011
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
Series
Abstract
Two back-EMF-based position observers are compared for motion-sensorless synchronous reluctance motor drives. The reduced-order observer is of the second order, and the adaptive full-order observer is of the fourth order. The proposed design rules guarantee the stability of the adaptive full-order observer, if the parameter estimates are accurate. The observers are experimentally evaluated using a 6.7-kW synchronous reluctance motor drive in low-speed operation and under parameter errors. The gain selection of the second-order observer is easier, but the adaptive full-order observer is more robust against parameter variations and spatial harmonics.
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Keywords
observer, stability conditions, speed sensorless, parameter uncertainties
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Citation
Tuovinen, Toni & Hinkkanen, Marko & Luomi, Jorma. 2011. A comparison of an adaptive full-order observer and a reduced-order observer for synchronous reluctance motor drives. 2011 Symposium on Sensorless Control for Electrical Drives (SLED). 5. ISBN 978-1-4577-1853-3 (electronic). DOI: 10.1109/sled.2011.6051555.